Mondovi: Opal & Fire Opal Rockhounding in Lincoln County, Washington

Updated June 2026

Mondovi is a mapped rockhounding spot in Lincoln County, Washington. Reported finds include opal, fire opal. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Lincoln County
State: Washington
Coordinates: 47.72958, -118.04828

Geology at Mondovi

This spot sits on Priest Rapids Member, Wanapum Basalt, mapped as basalt flows (priest rapids member [crb and wb]) that formed roughly 23 to 5 million years ago. Volcanic ground like this is where agate, jasper, and other chalcedony typically form, filling old gas pockets and fracture seams in the flow rock.

Mapped unit: Priest Rapids Member, Wanapum Basalt
Age: 23–5 Ma (Miocene)
Rock types: basalt flows (priest rapids member [crb and wb])
Elevation: 2,360 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

Best time to visit Mondovi

Best months: March to October. Typical highs run 83°F in midsummer and 32°F in midwinter, with winter lows near 20°F.

Climate normals: NOAA 1991-2020 monthlies, DAVENPORT station (7 mi away).

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

State guidance last verified: April 1, 2026

Washington Geological Survey (DNR)
Stonerose Interpretive Center — Visit & rules
BLM Spokane District
Community submissions reviewed against published agency rules

Found at Mondovi

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Nearby rockhounding spots

Other rockhounding spots within driving distance of Mondovi.

Across the state line from Mondovi

Mondovi is close enough to the Washington border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Mondovi FAQ

Where is Mondovi?+

Mondovi is in Lincoln County, Washington, at 47.72958, -118.04828.

What rocks and minerals can you find at Mondovi?+

Mondovi is reported to produce Opal, Fire Opal.

Is collecting allowed at Mondovi?+

Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Mondovi?+

Most agate and jasper is surface float: bring a spray bottle, a pick or small shovel, and a sturdy bag. Wet stones show their banding and translucence.

When is the best time to visit Mondovi?+

The most comfortable months at Mondovi are March to October.

How do I get to Mondovi?+

Open the directions link to navigate to 47.72958, -118.04828 in Google Maps. Some spots are remote, so check road conditions before driving out.

More rockhounding in Washington

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Open Mondovi on the map

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